Leadership is not about being in charge. It's about taking care of those in your charge.
The great powers are always searching for opportunities to gain power at the expense of their rivals, and they will use force if they think it will profit them.
The only person you are destined to become is the person you decide to be.
Mastery is not a function of genius or talent. It is a function of time and intense focus applied to a particular field of knowledge.